Motor mechanism for calculating-machines.



R. REIN. MOTOR MEGHANISM FOR GALOULATING MAGHINES.

APPLICATION PILBD'AUG s. 1910.

988,144. Patented Mai-, 28,1911.

Wdh-5525:

it appe ROBERT REIN, @E BERLIN, GER-MANY.

MOTOR MECHANISM FOR Specicatoii. of Letters etent.

Application filed Ilngust 19H).

CALCULATINGQEAGHXNES.

Seriell No. 576,134.

To all whom it may concern:

Be itlnown that I, Ronmi'iY REIN, n subject oi. the German Emperor,residingW at Puttknmerstrasse 19, Berlin, Germany, have invented certainnew and useful lmpro-vements Relating to ll'otonlllechanisin torCalculatinffihlachines; and l do hereby de- Clare the ollowing to be atoll clear, end, exact description got the inventiona such es willenable others skilled in the art to which rtoins to make and use thesame. lVith calculating machines provided with handles for carrying outthe operations of multiplication as at present constructed, has beennecessary to give the actuating hondle as many turns With vthe hand asthe cross sum of the factors. In order to save the 'tedious Work thusinvolved when performing several processes of multiplication one otterthe other, it has already been proposed, instead of using a handle, toprovide nine sets ofniechanisms for eecting multiplication by thenumbers from l to 9, so that by put.- ting the sets into :tction motormechanism has been brought into operation for actuating the counting,1ivheels to an extent, corre spending to the number represented on 'thekey controlling the particuloit'set. ln these cases, a continuouslyWorking motorhes been provided and o movable member for tormingconnection between this motor and 'the counting,- mechanism of thecalculating` inachine so that by the shittingl of such movable member inone direction the coupling of the motor with the counting mechanism oitthe calculating` machine has been eftlectedj While by shitting suchmember in the opposite direction the uncoupling has been eifected.

The motor mechanism forming, the subject mutter ot' the presentinvention belongs to the class of such mechai'iisnis just indis cated.

The characteristic feature oit the invention consists in providing; asthe member :for trnnsniittrll. the motion from the inotor to the"zounting mechanism oit the cnlculating machine a worin which isrotatably mounted and capable ot .longitudinal movement, which worin isbrought into operation by pushing down one of a number et niultiyilyingkeys. Un this worin/is :i corresponcing internally7 threaded nut whichis movable on the worin in the direction of the axis there of, so thatas the worin rotates the nut moves forward until it reaches thedepressed l multiplier hey ond releases safne, whereupon thetransmitting member (that is thc worm) andthe releasing1 member orebrought hack to their original positions.

@ne methoo out carrying` out` is shown in the accompanying drawing,` bywey of exemple.

ln the drvvinge Figure l is a plan; Fig. is a longitudinal cross sectionteken on the line t? B, Fig. l; 3 e-cross section on the line C, D, Fig:l; and Fig. e is a perspectiv'e view of the "strip for moving the yworinlongitudinally. find one ot the multi* nlying` keys in position to enteroneol the holes therein. y

The same numerals ol reference are ein- `ployed to denote the some parts-in ull the View". y

l is the framework on which the calculating machine, which is to bedriven by the moto-rv is mounted.

.2 is o continually rotating` motel located under the lower part of thetraineworl-z l, which motor drives, through suitable intermedintegearing-l, a bevel wheel 8 suitfibly is another bevel Wheel which isloosely mounted on theI end ot'a Worin hereinafter referred to end whichis held in rotatable ein reglement with a bearing in the casting l andmeshing with a gear wheel G, see Fig. ovhich the bevel Wheel 5 to thecounting' mechanism .7 et 'the calculating machine, when one ol" themultiplying keys is depressed, suitable intermediate gearing @j 'S beinginterposed to snit requirements.

'.lhc multijplyinleys 9 corresponding 'to the numbers from l to 9 arelocated side by side in recesses l0 inthe framework l, und fire pressedupward by ineens ot spirul springs Ill. tending` to keep them in thedis*- engjnpged position. Below the multiplier keys il is the niei'uberfor transmittingihe motion. This consists of @norm l). passing throughbearings in the tran'ieuf'orl; l so es to be capa-- ble of rotation andalso, of longitudinal movement.. The pitch of the Worm 'is equal 'to thedistance between two of the multiplier keys. rl`his Worin is provided atone or its ends (that to the right) with a couplingr clutch lil. whichrests in the coupled position aesinet e corresponding' notch in 'the hubof `the bevel Wheel :it its other end is keyed a ring le., having aclutch l5 which engages with a corresponding; notch on the hub of theinvention located between benrino's in the framework.'

llo

' formed .with a forked the Wheel 5, so that in the coupled positionlworm .A1-'2 by the depression of one of the multi lier keys 9, and thento effect the uncoupling and return of the same to the starting positionafter a number of rotations corresponding'to the number on the multilierkey which has been depressed, the folowing arrangements are provided. Inthe drawings lone of the multiplying keys is shown depressedand the Worm12 shifted and, coupled with gear wheel 3, to transmit motion to gearwheel [5. 16 is a strip located beneath the multiplier' keys. This stripis ortion which enibraces the worm 12 an operates between guides on thesame, in such a way that the worm can rotate freely but is obliged tomove longitudinally with the strip 16. This strip 16 has nine holes,corresponding to the nine multiplier keys which holes are normally 'outof vertical ulinenient with the multiplier keys in the uncoupledposition of the worin 12. The multiplier keys 9 are provided with coneshapedy ends 17 which, when the keys are depressed and be 'in to enter-the holes move the strip. 1G engitudinally to the right, carrying withit the worm 12 so that the clutches 1o and 13 take into thelcorresponding notches of the bevel wheels 5 and 3 and coupling iseffected. In order to elect the uncoupling at the correct momentcorrespondin with the number on the multiplier key which has beendepressed, a nut 18 is provided on the worm, which nut is carried alongon a guide bar which prevents it rotating. This nut 18 runs on "thethread of the worm 12 when the worin is rotating after coupling hastaken place, in .a orward'direction until its inclined face 20- reachesthe cone shaped end 17 of the depressed key', and pushes the same'upward. The forward movement of the nut 18 at the same time winds up aspring 22 which passes around the hub of a segmental wheel 21. The nut18 is connected with this segmental wheel 21 by a wire or cord 23.Therefore, as soon as the nut 18 with its projecting face 20 presses upthe depressed multiplierv key, the strip 16 which has become free againmoves the worm 12 under the influence of the spring22, firstlongitudinally toward the left so that uncoupling is effected, and thenas the nut, 18 is pulled by the spring 22 it brings the uncouple'd worm12back to its starting position. .fis the pitch of the worm 12corresponds exactly to the distance of two of the multiplier keys fromone another, the movement of the nut 18 from one multiplier key to thenext corresponds eX- actly to one revolution of the worin 12. As

in the starting position the iirst multi lier key is distant by one turnof the Worm rom the nut 16, and it is obvious that on depressing thefirst multiplier key the worm 12 'makes exactly one revolution, afterwhich the release is eilected. It the seventh mull tiplier key isdepressed on the other hand it makes seven revolutions before beingreleased, and so on. It is moreover obvious thatwitli this gear, inspite of the fact that the motor is continually running, the machine canbe worked with a handle because so long as the multiplier keys are notactuated there is no coupling between the counting mechanism of thecalculating machine and the motor.

What I claim and desire to secure by Letters Patent of the United Statesof America is 1. In motor mechanism for calculating machines comprisinga constantly rotating motor and means brought into operation by thedepression oi a kc` for coupling the count-ing mechanism. with themotor, and uncoupling same; the combination of a worm adaptedl to bebrought into the coupling position hy the-depression of a key so as tocouple the motor to the counting mechanism, the said worm having a nutadapted to slide axially along such worm and to be carried along by therotation of the worm until it comes into contact with a. depressedkey'and releases saine, with means forl then returning the worm to theunooupled position and the nut to thestarting position substantiallyas'described.

2. -In motor mechanism for calculating niachinos comprising a constantlyrotating nio: tor and means brought into operation by the depression ofa key for coupling the counting mechanism with the motor, and uncouplingsame; the combination of a worm so mounted as to enable it to belaterally displaced and to couple up the motor mecha- 'nisin with thecalculating mechanism in one position and 'to be disengaged in anotherposition, a strip adapted to embrace said worin and cause it to movelongitudinally, a. row of multiplier keys above such strip, conical endsto said keys, a row of holes in such strip and coming to one side of theaxes of the keys in the uncoupled position s0 that on depressing' one'of such keys the conical end enters one of the holes in the strip andbrings the worm into the coupling position substantially as described. y

3. In motor mechanism for calculating machines comprising a` constantlyrotating motor and means brought into operation by the depression of akey for coupling the countin mechanism with the motor, and uncouplingsame; the combination of a worin so mounted as to enable it to belbngitudinally displaced and to couple up the motor mechanism with thecalculating ico anism in one position and to be disengaged in anotherposition, a strip adapted to em brace said worm and' cause it tomove-longitudinally, a row of multiplier keys above such strip, conicalends to said keys, a row of holes in such strip and coming to one sideOof the axes of the keys in the unooupled position so that on depressingone of such keys the conical end enters one of the holes in the stripand brings the worm into. thecoupling posltion, a nut sliding on a guideand embracing the said worm, a spring adapted to be put tension by thealong under the action of it reaches a depressed mul-1. releases same,whereupon the sprin the Worm and the nut to the starting' tionsubstantially as described In testimony whereof, l" aiiix my ture,inpresence of two witnesses.

.'RQEERT l?? Witnesses:

. HENRY Hksrnn,

VVoLDEMAR Hann@ conica of this patent may be obtained for ve cents each,by addressing the Gommisszener Washington, .'D. C,

